VoltHot Technologies

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Non Contact Insulated Telescopic Probe High Voltage Detector - Audio & Visual

  • Confirms the status of line whether "live or dead" or any induced voltage in electrical power system.
  • The non contact insulated telescopic probe at voltage sensing position can be used on LT lines & HT lines up to 33kV and the detector is at handle position
Technical specifications
Model name VoltHot_NCT_VD_Audio-Visual_Series
Functionalities Voltage detection by noncontact (Proximity)
Voltage levels 100V to 20kV (P-G)
Functional modes

230V (P-G)

11kV (P-P)

33kV (P-P)

Self test

Applications OH HV lines, URD HV lines & capacitive points, HV switchyards and low voltage systems.
(Line live or OFF or induced – voltage status check)

Electric Field Technology sensor system basis.

Threshold voltage setting.

Test before touch functionality Self test diagnosis and Test before touch source
Detector response time < 1 second
Operating frequency 40Hz to 65Hz
Battery voltage 9V (Duracell)
Low battery indication < 6V
Sleep mode time Sleep mode when detecting voltage not present for 15 minutes and immediate active mode when detecting voltage present.
Detection indication LED intermittent & Buzzer audible displays

Insulated telescopic probe length 15 feet

Overall diameter 110 mm * length 100 mm (Plastic housing for PCB)

(3 feet length insulated handler to be put on to detector)


(excluding hot stick)

Approx.  2.5kg  (including insulated telescopic probe )
Product standard IEC 61243-1
Operating temperature -100C to +600C
Storage temperature -200C to +600C
Humidity 25% RH to 96% RH
Water resistant Yes
Reliability (warranty) 3000 hours operations
Service support & calibration Yes

Caution: The limit mark indicates that the probe shall not touch the HV line beyond this in case for the high voltage level above 5kV for better safety of operator.


  • Prototype concept development test is under progress
  • Innovation disclosure filing for India Patent is under process
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